Submission #103616

#	Time	Username	Problem	Language	Result	Execution time	Memory
103616		leonarda	Baloni (COCI15_baloni)	C++14	100 / 100	1550 ms	92480 KiB

baloni

#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
typedef pair<int, int> pi;
typedef long long int lint;
const int inf = 0x3f3f3f3f;
const int maxn = 1e6 + 5;

int n, ans;
set<int> v[maxn];
int a[maxn];
bool memo[maxn];

int main ()
{
	ios::sync_with_stdio(0);
	
	cin >> n;
	for(int i = 0; i < n; ++i) {
		cin >> a[i];
		v[a[i]].insert(i);
	}
	
	for(int i = 0; i < n; ++i) {
		if(v[a[i]].count(i) == 0)
			continue;
		int indeks = i;
		
		while(indeks != -1) {
			v[a[indeks]].erase(indeks);
			
			set<int>::iterator it = v[a[indeks] - 1].lower_bound(indeks);
			if(it == v[a[indeks] - 1].end())
				indeks = -1;
			else
				indeks = *it;
		}		
		
		++ans;		
	}
	
	cout << ans;

return 0;
}

• Subtask 1: 100 / 100